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伪随机可控震源扫描一直被认为是一种可替代标准线性扫描的方法,因为其有以下潜能:优越的正交性、对基础设施破坏的可能性较小以及可增强低频成分。尽管这一特性现在已不是十分重要,但它们因以前具有良好的自相关形状而备受青睐。虽然它们的应用受到了限制,但是由于它们能够降低干扰噪声,且同步采集技术越来越受欢迎,所以重新激发了人们的兴趣。过去45年间发展了各种各样的伪随机扫描方法。本文在对各类扫描进行分类和描述前先将其应用机能进行阐述。最后将依据扫描的主要性质,包括对同步探测的适用性,对它们进行比较。
Pseudo-random vibroseis scanning has long been considered an alternative to standard linear scanning because of its potential for superior orthogonality, less potential for infrastructure damage, and enhanced low-frequency components. Although this feature is not very important now, they are favored by their good autocorrelation. Although their applications are limited, they have rekindled their interest by reducing the interference noise and by increasing the popularity of synchronous acquisition techniques. Over the past 45 years, various methods of pseudorandom scanning have been developed. This article classifies and describes various types of scanning before describing its application capabilities. Finally, they will be compared based on the main characteristics of the scan, including the applicability of the synchronization probe.